Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1977 Mazda Cosmo Automatic TransFACTORY OEM SERVICE PROCEDURE
1976-77 Rotary Engine Equipped Models
- Connect tachometer to engine. Turn ignition on and check that warning light comes on. Start engine. Warning light should go out.
- Disconnect heat sensor. Connect jumper wire between connector terminals (control unit end). Warning light should come on. Disconnect air control valve solenoid. Attach voltmeter to terminal "A". See Figure. Voltage should be indicated.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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